Comparison of relative permeability–fluid saturation–capillary pressure relations in the modelling of non-aqueous phase liquid infiltration in variably saturated,layered media |
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| Authors: | F Fritjof Fagerlund Auli NiemiMagnus Odén |
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| Institution: | Department of Earth Sciences, Air and water sciences, Uppsala University, Villavägen 16, 75236 Uppsala, Sweden |
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| Abstract: | The characteristic functions relating relative permeabilities and capillary pressures to fluid saturations (kr–S–Pc models) are of great importance for the modelling of sub-surface multi-phase flow and transport. In order to test their performance and to identify their important parameters, four well-known three-phase kr–S–Pc models have been tested against published experimental data on non-aqueous phase liquid (NAPL) migration in the unsaturated zone. Both homogenous systems and systems with embedded heterogeneities have been analysed. |
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| Keywords: | Relative permeability Capillary pressure Constitutive relations Multi-phase flow Modelling NAPL Tortuosity Scaling |
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